Big companies that have a legal team and operate in the EU generally do honour deletion requests - I have worked with/for some and a big part of the system arch

Big companies that have a legal team and operate in the EU generally do honour deletion requests - I have worked with/for some and a big part of the system architecture usually revolves around being able to be sure that deleted data is erased even from backups within 30/60/90 days. Smaller companies, all bets are off - good chance your data is sitting on a dusty hard drive/tape backup or in some 'data_extract_test_2023.tgz' file in an S3 bucket.